Customs Declaration: Introduction: Trouser twists ideal for army\/military personnel, camping, hikers, cyclists. Used to fold trousers under to give a smarter look in uniform or can be used for a quick and easy way to shorten the length of your trousers. The twists are made from a durable elasticated and fray resistant material with steel hooks at either end. Features: Material: rubber band. Size: Length 20cm, stretch length 40cm. Net weight: 6 grams. Note:There is 2-3% difference according to manual measurement. Thanks for your understanding!